New Stereo Integrity Mag Proto: Testing Results

lilmaniac2
5,000+ posts

Ask Me about SI Mag V4!
Sorry no pics, this is a ugly proto that will be changed, when the updated proto arrives to the guys @ Si pictures will be posted, until then you will have to wait in suspense

Me and Jim spent a few hours listening to the Mag in his vehicle with a number of difference sources, and in different boxes. If you have questions for Jim you will probably have to post them on the original thread on SSA

Link Here: http://www.soundsolutionsaudio.com/forum/index.php?showtopic=15745&st=0&gopid=353051entry353051

First of all, I'd like to thank Nick Lemons for giving me an opportunity to audition this latest version of the Mag 12"... :thanx:

Chad Hicks and I auditioned this driver in my '94 E-150, under the exact same test conditions used for other listening sessions we've done. Power was provided by a PG Tantrum T1200.1, set to 800W @ 4 ohms. In use, the woofer needed nowhere near that level of power to reach its full potential, IMO. Enclosure used was 1 cubic foot, sealed. The woofer was lowpassed @ 63Hz, 24dB/oct.

INITIAL THOUGHTS:

The build quality is very good, something that doesn't surprise me given my previous experiences with SI products. The pressed paper cone and poly dustcap construction is simple and unassuming, and the push terminals are easy to use and hold the speaker wire well. One thing that struck me about this new Mag is the mounting depth; at 5 and a half inches deep it opens itself up for some new installation options that might have not been possible with the traditional 12-spoke basket and motor of the previous generation. It seems like it's begging for installation in a shallow spare tire well //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

WHAT'S TO LIKE:

I used my traditional playlist of tracks to put the woofer through its paces - Eva Cassidy, the Eagles, Dave Matthews, Fleetwood Mac, Chris Izaak, John Williams. In particular, "The Chain" on Fleetwood's Rumours brought a big smile to my face //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif The transient response, the individual attack of the notes, the blending to the front stage...it all was effortless. Same with Eva Cassidy's "Wade in the Water" and "Wayfaring Stranger". Both are tracks that have made some pretty high-profile subwoofers choke in my opinion, but this Mag handled it with aplomb..."Wade in the Water" has some really neat stuff halfway through it with a stand-up bass playing a 7 note walking line while a muted trumpet does its thing...like any good subwoofer, the Mag reproduced what was on the recording without drawing attention to itself. In retrospect I really wish I had some Mingus with me, I bet Mingus Ah Um would be amazing...

It's not scared of the orchestra, either. Kettle drums on Williams' score for "Revenge of the Sith" were extremely accurate and extended very deep. I still prefer the Aura MR12.4 slightly for large orchestral arrangements, but now the price differential isn't even fair to compare the two.

WHAT'S NOT TO LIKE:

The cosmetics of the basket aren't really what I like, 12-spokes look better when inverted IMO, but since it allows the shallower clearance I'd rather have that functionality anyway over looks. That's about all I can find not to like, so that should say something in itself.

OVERALL:

If you're looking for a small, sealed-box woofer and realism is your number-one priority, I don't see how you could leave this driver off your list. Power-wise, it really doesn't need a lot of power to shine - I would say 500-600W is all you need to get it to perform admirably.

Two thumbs way up.

My review will follow the same format as Jim's for consistency sake.

A big thanks for Nick for allowing a basshead like myself the opportunity to play with a driver so far from my normal exposure to the large SPL drivers that take a ton of power. The mag is certainly a unique driver.

Jim and I auditioned this driver in his '94 E-150, under the exact same test conditions used for other listening sessions we've done. Power was provided by a PG Tantrum T1200.1, set to 800W @ 4 ohms. In use, the woofer needed nowhere near that level of power to reach its full potential, IMO. Enclosure used was 1 cubic foot, sealed. The woofer was lowpassed @ 63Hz, 24dB/oct.

INITIAL THOUGHTS:

When I first recieved this prototype I am used to seeing very "unique" ways of shipping. Items ranging from pool noodles and foam to packing peanuts are common to find. However with this proto the shipping was double boxed and I would guess to be very close to the packaging that will be used for production models. The build quality was excellent and to be honest I was a bit concerned to begin with when I realized how unique this driver would be. I was very surprised to see very clean glue joints and neatly soldered terminals.

WHAT'S TO LIKE:

I won't go into as much detail as Jim did for the sealed review, but honestly this driver was designed to be used in a sealed box and will only be recommend to be used in a sealed box. Ported drastically reduces the power handling due to the soft suspension used. After all this driver was designed to be a low cost, small mounting depth, small box driver. Nick aimed for a 1 cf sealed box for this driver and hit it dead on. I would think a smaller box would do ok and a slightly larger box wouldn't be horrible, but 1cf is where its at. Sealed this driver excelled and took all the amp wanted. I even found a Young Jeezy CD in Jim's cd case to throw at the mag and it sounded good, for the source used. It played as loud as the ported 12" driver Jim daily drives with.

WHAT'S NOT TO LIKE:

Well in case you haven't figured it out from the previous statements in this review, ported is not the enclosure for this driver. Now I know this will concern some of you, but you have to realize the way this driver was designed, you don't need the larger ported box to compensate for lack of output as it has plenty sealed. By using the recommended 1cf sealed box and 600-800 watts of power you will have one of the most impressive sounding subwoofer setups around, and still have respectable output. Now if you are only concerned with loudness this driver obviously isnt for you, but if you are looking for a nice sounding driver, especially if you have limited space, this is the driver for you.

One other issue that I haven't had a chance to discuss with Nick and is a very very minor issue is the terminals. The basket is painted and I suspect that it is insulated so this probably isn't an issue, but I will state it now. The wire going through the terminals, because of the slim basket design, comes close to the basket if your not careful installing it. As I said this is a minor issue and if installed properly you wont have to worry about it, but it may be something to be addressed now that saves a few headaches for installers.

OVERALL:

When I first installed this driver and began listening to it with Jim I was very impressed with it. Something that comes to mind is Jim saying, " I am going to have a hard time recommending Vanadiums when the mag sounds this good, especially at is price point." I believe that sums up my opinion of the mag in one sentence.

Low price, Small box, low power requirements, all with the quality of Si products, I'd say a match made in heaven.

 
looks like i'm set on a new substage for my new car even though i have no $ //content.invisioncic.com/y282845/emoticons/rolleyes.gif.c1fef805e9d1464d377451cd5bc18bfb.gif

any T/S? or, how will they work IB? (doing an IB install in a 98-02 accord, w/ full carputer)

edit: compared to idmax's (IB)

 
Going back to the roots of teh MAGNUM!!!
//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

nG
Haha, exactly. It only took us how many years to hit the original goal? //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif

But seriously, Noah's right - the new Mag goes right back to the design philosophy of the original "Magnum" (I hope Mitek isn't looking when I typed that) - small sealed enclosure, 1000 watt power handling, and superb SQ. Throughout the years the Mag evolved into a SQL driver for sure. By our last generation you could throw an SAZ-1500D on a single 12 or 15 without any problems and for competitions you could hammer on them with 2000+ watts on burps.

Basically I went back to the drawing borad, picked up a very linear and extremely T/S preserving motor technology, shrunk the mounting depth by over an inch, and bumped SQ up to where it's never even thought of approaching before.

As I disucssed on here with Audioholic a long time ago, I'm not bending the charts/limitations of woofer design...I just chose to toss power handling down quite a bit. Going from a true 1500 watts to 900-1000 watts is a significant bump downward. Also designing the driver to work in a small sealed alignment first and foremost allowed for the SQ piece of the pie chart to increase quite a bit. The previous Mag's would work in anything because they were so damned hard to blow up.

Anyway, the Mag now offers a smaller sealed enclosure size, 1000 watt power handling, small mounting depth, and about half the weight of other subwoofers.

And you know you've done something right when you receive a PM from Jim that says "holy bejeezus. You've outdone yourself"

 
Yet even more info to bolster my decision to get a new mag when they come out. I better get started on building my box //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 
Haha, exactly. It only took us how many years to hit the original goal? //content.invisioncic.com/y282845/emoticons/tongue.gif.6130eb82179565f6db8d26d6001dcd24.gif
But seriously, Noah's right - the new Mag goes right back to the design philosophy of the original "Magnum" (I hope Mitek isn't looking when I typed that) - small sealed enclosure, 1000 watt power handling, and superb SQ. Throughout the years the Mag evolved into a SQL driver for sure. By our last generation you could throw an SAZ-1500D on a single 12 or 15 without any problems and for competitions you could hammer on them with 2000+ watts on burps.

Basically I went back to the drawing borad, picked up a very linear and extremely T/S preserving motor technology, shrunk the mounting depth by over an inch, and bumped SQ up to where it's never even thought of approaching before.

As I disucssed on here with Audioholic a long time ago, I'm not bending the charts/limitations of woofer design...I just chose to toss power handling down quite a bit. Going from a true 1500 watts to 900-1000 watts is a significant bump downward. Also designing the driver to work in a small sealed alignment first and foremost allowed for the SQ piece of the pie chart to increase quite a bit. The previous Mag's would work in anything because they were so damned hard to blow up.

Anyway, the Mag now offers a smaller sealed enclosure size, 1000 watt power handling, small mounting depth, and about half the weight of other subwoofers.

And you know you've done something right when you receive a PM from Jim that says "holy bejeezus. You've outdone yourself"
Is there ANY hope of IB potential?

 
I can't freakin wait for these. I have owned the last 2 generations of Mags and have loved both. The current/last gen mag is an amazing woofer, and will take a beating and sounds great. I love my 15 to no end and it continues to impress me with its sq and loudness. The biggest thing I have always loved about the Mags is the SQ they give you, and for the new one I am totaly psyched.

So the Mag 15 will be going inside in my HT setup //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

and 2 12's will be going sealed in place of it in my altima //content.invisioncic.com/y282845/emoticons/cool.gif.3bcaf8f141236c00f8044d07150e34f7.gif

****.... the only thing is I may have to find another amp to run 2 12's.... unless I am wrong in my thinking of wiring.

 
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lilmaniac2

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